Rank: Member
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Joined: 3/2/2005(UTC) Posts: 13
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I'm trying to create a blank, white, grayscale bitmap 'canvas' on which to draw several other grayscale bitmaps. By default the background is created as black. What is the correct way of creating a white bitmap? I have tried seveal methods but each time I draw a grayscale bitmap on top of it they don't appear.
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Rank: Advanced Member
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Joined: 8/3/2003(UTC) Posts: 1,070
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Hello. I think that sample listed below will help you. Code:// Loading the source bitmap.
Aurigma.GraphicsMill.Bitmap image = new Aurigma.GraphicsMill.Bitmap(@"c:/gray.jpg");
// Creating empty grayscale bitmap with white background.
Aurigma.GraphicsMill.Bitmap canvasBitmap = new Aurigma.GraphicsMill.Bitmap(Aurigma.GraphicsMill.RgbColor.White,
300, 300, Aurigma.GraphicsMill.PixelFormat.Format8bppGrayScale);
// Obtaining canvas instance created on the bitmap.
Aurigma.GraphicsMill.Drawing.GdiGraphics canvas = canvasBitmap.GetGdiGraphics();
// Drawing the loaded grayscale image on the canvas.
canvas.DrawImage(image, 100, 100, 100, 0,
Aurigma.GraphicsMill.Transforms.CombineMode.Copy, 1.0f,
Aurigma.GraphicsMill.Transforms.InterpolationMode.MediumQuality);
// Disposing canvas instance.
canvas.Dispose();
// Saving canvas bitmap.
canvasBitmap.Save(@"c:/1.png");
Edited by user Monday, December 24, 2007 3:55:21 PM(UTC)
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Rank: Member
Groups: Guest
Joined: 3/2/2005(UTC) Posts: 13
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Thanks for that. I think the problem lies with my settings for DrawImage. I was using CombineMode.Add rather than CombineMode.Copy. Cheers
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